/*
 * jETeL/CloverETL - Java based ETL application framework.
 * Copyright (c) Javlin, a.s. (info@cloveretl.com)
 *  
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
package org.jetel.connection.nosql;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.jetel.data.DataRecord;

/**
 * @author krivanekm (info@cloveretl.com)
 *         (c) Javlin, a.s. (www.cloveretl.com)
 *
 * @created Apr 15, 2013
 */
public class StatementBuilder {
	
	private final ReplacementHelper replacementHelper;
	
	public StatementBuilder(Pattern pattern) {
		this(new DefaultReplacementHelper(pattern));
	}
	
	public StatementBuilder(ReplacementHelper replacementHelper) {
		this.replacementHelper = replacementHelper;
	}
	
	public String buildStatement(String template, DataRecord values) {
		if (values == null || template == null) {
			return template;
		}
		
		Matcher matcher = replacementHelper.getMatcher(template);
		
	    StringBuffer sb = new StringBuffer(template.length());
	    while (matcher.find()) {
	    	replacementHelper.appendReplacement(sb, matcher, values);
	    }
	    matcher.appendTail(sb);
	    
	    return sb.toString();
	}
	
}
